99664933 has 2 divisors, whose sum is σ = 99664934. Its totient is φ = 99664932.

The previous prime is 99664921. The next prime is 99664949. The reversal of 99664933 is 33946699.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66048129 + 33616804 = 8127^2 + 5798^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99664933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99674933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49832466 + 49832467.

It is an arithmetic number, because the mean of its divisors is an integer number (49832467).

Almost surely, 2^99664933 is an apocalyptic number.

It is an amenable number.

99664933 is a deficient number, since it is larger than the sum of its proper divisors (1).

99664933 is an equidigital number, since it uses as much as digits as its factorization.

99664933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 944784, while the sum is 49.

The square root of 99664933 is about 9983.2325927026. The cubic root of 99664933 is about 463.6398888539.

The spelling of 99664933 in words is "ninety-nine million, six hundred sixty-four thousand, nine hundred thirty-three".